🐛 Fix HTTPX async event hook

[roniemartinez]

Traceback (most recent call last):
...
    await hook(request)
TypeError: object NoneType can't be used in 'await' expression

[codecov-commenter]

Codecov Report

Merging #129 (362ace8) into master (9f0adb5) will decrease coverage by 0.08%.
The diff coverage is 50.00%.

@@            Coverage Diff             @@
##           master     #129      +/-   ##
==========================================
- Coverage   97.28%   97.19%   -0.09%     
==========================================
  Files          14       14              
  Lines        1104     1106       +2     
==========================================
+ Hits         1074     1075       +1     
- Misses         30       31       +1     

Impacted Files	Coverage Δ
dude/optional/beautifulsoup_scraper.py	100.00% <ø> (ø)
dude/optional/lxml_scraper.py	100.00% <ø> (ø)
dude/optional/parsel_scraper.py	100.00% <ø> (ø)
dude/optional/utils.py	98.03% <50.00%> (-1.97%)	⬇️

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